City of Heroes.
Not the most graphically-detailed game by far, but it has its moments. I'm the flying red guy, of course. Looks like I'm summoning a snowstorm or something.
If interested, I recommend watching some "Travel Powers" (super speed, super jump, flying, teleportation) videos on youtube or wherever since running around is seriously half the fun of the game.
If you ever wondered what it feels like to fly, this might be the game.